http://simbad.u-strasbg.fr/simbad/sim-fbasic

https://aladin.u-strasbg.fr/#AladinLite

https://www.raben.com/maps/

http://lucadavino.lahost.org/blog/static.php?page=polar_finder

https://www.stsci.edu/hst/instrumentation/reference-data-for-calibration-and-tools/astronomical-catalogs/calspec

https://archive.stsci.edu/hlsps/reference-atlases/cdbs/current_calspec/

https://www.techspot.com/downloads/3689-adobe-photoshop-cs2.html

http://www.rochesterastronomy.org/snimages/

http://www.cbat.eps.harvard.edu/unconf/tocp.html

https://openphdguiding.org/development-snapshots/

https://hyperion-astronomy.com/downloads/

http://skytechx.eu/?page=download

http://var2.astro.cz/ETD/protocol.php

http://www.astronomy.ohio-state.edu/asassn/transients.html

https://www.wis-tns.org/

https://www.aavso.org/

https://ascom-standards.org/

https://www.atik-cameras.com/software-downloads/

https://www.sxccd.com/support/resources/